feature/pgtk c3377ae: Revert atimer changes

[Yuuki Harano]

branch: feature/pgtk
commit c3377ae3b7fdb8714e03586589d1b2804cf08e17
Author: Yuuki Harano <masm+github@masm11.me>
Commit: Yuuki Harano <masm+github@masm11.me>

    Revert atimer changes
    
    They seem to be not needed any more.
    
    * src/atimer.c (set_alarm): Revert
    (turn_on_atimers):  Revert
    (have_buggy_timerfd):  Revert
---
 src/atimer.c | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/src/atimer.c b/src/atimer.c
index 197b504..490c21b 100644
--- a/src/atimer.c
+++ b/src/atimer.c
@@ -310,13 +310,10 @@ set_alarm (void)
          ispec.it_value = atimers->expiration;
          ispec.it_interval.tv_sec = ispec.it_interval.tv_nsec = 0;
 # ifdef HAVE_TIMERFD
-         if (timerfd >= 0)
+         if (timerfd_settime (timerfd, TFD_TIMER_ABSTIME, &ispec, 0) == 0)
            {
-             if (timerfd_settime (timerfd, TFD_TIMER_ABSTIME, &ispec, 0) == 0)
-               {
-                 add_timer_wait_descriptor (timerfd);
-                 exit = true;
-               }
+             add_timer_wait_descriptor (timerfd);
+             exit = true;
            }
 # endif
          if (alarm_timer_ok
@@ -467,8 +464,7 @@ turn_on_atimers (bool on)
       if (alarm_timer_ok)
        timer_settime (alarm_timer, TIMER_ABSTIME, &ispec, 0);
 # ifdef HAVE_TIMERFD
-      if (timerfd >= 0)
-       timerfd_settime (timerfd, TFD_TIMER_ABSTIME, &ispec, 0);
+      timerfd_settime (timerfd, TFD_TIMER_ABSTIME, &ispec, 0);
 # endif
 #endif
       alarm (0);
@@ -575,9 +571,6 @@ have_buggy_timerfd (void)
 # ifdef CYGWIN
   struct utsname name;
   return uname (&name) < 0 || strverscmp (name.release, "3.0.2") < 0;
-# elif defined HAVE_PGTK
-  /* pgtk emacs does not want timerfd. */
-  return true;
 # else
   return false;
 # endif